Meghan Markle was made to feel at home by her husband-to-be Prince Harry today as he showed off his American lingo as the pair embarked on their royal Commonwealth duties together.
The prince and the US star were chatting to delegates at a Commonwealth Youth Forum reception in London when Harry referred to using a "Band-Aid" - an American plaster brand.
Illustrating the occasional language divide the couple may face, the prince, who was talking about finding long-term solutions, said: "Don't get sucked into the system of putting on a Band-Aid", before adding "American-style".
There was laughter as Harry turned to LA-born Ms Markle and explained that the British public call Band-Aids plasters.
Prince Harry was this week named the Commonwealth Youth Ambassador by his beloved grandmother, the Queen.
And as he lays the path for his future with the bride-to-be ahead of their big day on May 19, Meghan was by his side to attend the event in London on Wednesday as part of the high-profile Commonwealth Heads of Government Meeting (Chogm) week.
Meghan looked stunning in a cream and black pinstriped Altuzarra £1,450 dress, with a Camilla and Marc blazer casually draped over her shoulders, teamed with strappy heels. The bride-to-be finished the look with a black and white Oroton Avalon Zip Top Crossbody.
Harry has previously said the former Suits actress is "hugely excited" to be joining him in his Commonwealth duties.
And today she was was praised for her work on women's rights and asked to start up an equivalent to the UN's HeForShe campaign to get men and boys involved in the fight to achieve gender equality.
Karuna Rana, a Commonwealth Youth Climate Change Network leader from Mauritius, said: "I said she was a great champion and ambassador for women and that she should start a SheForShe campaign.
"She said she'd think about it - right after May 20."
The pair plan to support the Queen - the head of the Commonwealth - by taking a lead in youth matters for the 53 nations.
As they arrived at the Queen Elizabeth II Conference Centre in central London, Meghan Markle's most high-profile visit to date, the couple recieved a warm welcome.
Meghan and Harry met 40 of the 500 young leaders taking part in the Forum's sessions and inside they greeted LGBT Commonwealth Youth Leaders.
It is unusual for someone who has not yet married into the royal family to be involved in a high-profile occasion such as the Chogm summit.
But Meghan has given up her acting career to devote herself to being a full-time royal.
Meghan told delegates: "You have this umbrella to hold you together. It's incredible. Stay in touch - maximise it."
Jacob Thomas, from Melbourne, Australia, who works with the Commonwealth Equalities Network on Sexual Orientation and Gender Identity, revealed how Meghan said the LGBT issue was about "basic human rights".
He said: "She really laid down the key point that it's basic human rights."
Jacob, who was wearing an oversized leopard print coat, added: "Harry loved my jacket.
"I said he could borrow it but he said he already had three in different colours."
She has already spent Christmas with the royals at Sandringham- a break with tradition because she and Harry were not yet wed - and joined her husband-to-be on wide-ranging official engagements around the country.
Delivering a speech to the Commonwealth Forum on Monday, Prince Harry paid tribute to his wife-to-be in comments, which received a rapturous round of applause.
He said: "I am also incredibly grateful that the woman that I am about to marry, Meghan, will be joining me in this work, which she too is hugely excited to take part in.”
The Forum is encouraging young people to debate challenges facing their generation, and agree youth-led initiatives to influence decision-makers.
Meghan and Harry will also attend a Women's Empowerment reception on Thursday, hosted by Foreign Secretary Boris Johnson, involving charities and organisations that work to promote global gender equality through girls' education.
The Chogm summit is staged every two years to discuss the major challenges facing the Commonwealth's 2.4 billion citizens.
Heads of the 53 Commonwealth nations are meeting in London and Windsor.